Modular optic for changing light emitting surface
AssigneeCree, Inc.
InventorsDavid N. Randolph, John R. Rowlette, Jr., Craig Thomas Curtis
Life of this patent
Estimating the term…
Abstract
An LES is a surface from which light emanates from a lighting fixture. The present disclosure relates to a providing a lighting fixture that has an actual light emitting surface (A-LES), which is substantially smaller than the maximum potential LES (M-LES) for the lighting fixture. The M-LES is defined as the theoretical maximum LES for the mounting structure of the lighting fixture, and the A-LES is defined as the actual LES of the lighting fixture, as dictated by the lens or optical structures of the lighting fixture. The A-LES may provide an LES that is not only smaller, but also shaped differently, from the M-LES, to help control the light output of the lighting fixture based on the lighting application.
Claims20
A lighting fixture comprising:
- a mounting structure having a cavity and a front opening in communication with the cavity and defining a maximum potential light emitting surface (LES) for the lighting fixture;
- a light emitting diode (LED) light source associated with the mounting structure and configured to emit light out of the cavity and toward the front opening;
- and
- an integrated lens assembly comprising:
- a shroud over the front opening and having a light emitting opening;
- an optic body extending into the cavity toward the LED light source from the light emitting opening, which defines an actual LES that is substantially less than the maximum potential LES;
- and
- a lens through which the light emitted from the LED light source must pass before exiting the integrated lens assembly, wherein the lens is a total internal reflector that is recessed into an inside portion of the optic body such that the light emitted from the LED light source passes through the total internal reflector before exiting the light emitting opening.
Dependencies are inferred from the claim text.